After the first leg saw the teams play to a 1-1 draw, Thursday night's match looked as though it could be heading for extra time before DeLeon knocked a right-footed shot from the right side of the penalty box that found its way to the bottom right-hand corner of the net. The goal was assisted on a through ball by Robbie Russell.
The Red Bulls earned a penalty kick in the 69th minute and went up a man. Henry passed it to McCarty, who fed a perfect through ball to Cooper. Cooper touched it around Hamid and was taken down by the goalkeeper, earning a free kick, as Hamid was given a red card. Cooper converted his first kick, but referee Mark Geiger disallowed the goal, ruling encroachment on New York. The Red Bulls forward shot again and his attempt was saved by reserve goalkeeper Joe Willis. Minutes later, Red Bulls midfielder Rafa Marquez earned his second yellow card and the hosts were also reduced to 10 men.
The Red Bulls led the match in shots, with 18 compared to DC United's eight, and shots on goal, with six to DC United's three. Additionally, they controlled possession in the game for 54 percent of the time.
DC United advances to meet the Houston Dynamo in the Eastern Conference Championship, which will also be a two-game aggregate series.